a combining form meaning “pus,” used in the formation of compound words: pyogenesis.
Also especially before a vowel, py-.

Origin of pyo-

< Greek, combining form of pýon; akin to Latin pūs pus Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for pyo-


before a vowel py-

combining form

denoting puspyosis

Word Origin for pyo-

from Greek puon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for pyo-



The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.